If we do a backport of Buster's GRUB, maybe we should put it into the Experimental repo first...

Yes, please. One bug already mentioned is withen current /etc/grub.d/30_uefi-firmware
which stops the installer to write grub.cfg ( for some UEFI's not for all )
OK, I we could patch, but would rather perfer to get at least the newer grub from buster.
I'm happy to test it asap ;=)

If we do a backport of Buster's GRUB, maybe we should put it into the Experimental repo first...

Yes, please. One bug already mentioned is withen current /etc/grub.d/30_uefi-firmware
which stops the installer to write grub.cfg ( for some UEFI's not for all )
OK, I we could patch, but would rather perfer to get at least the newer grub from buster.
I'm happy to test it asap ;=)

Well, the new GRUB packages worked on MX 17.1 64-bit in a VM, so I'll upload them. Do you know how to set up a local apt repository so you can throw the debs in there? It's really easy:

and the upgrades should appear in apt. Answer "N" to replacing any of our custom files with the maintainer's version. It also may ask where you want to install the new Grub, so know where that's going to go. I'll upload the zip of the build to Google Drive. Here: https://drive.google.com/open?id=1xMuMS ... 0eteIkPTn7